<!DOCTYPE html>
<html lang="zh" xmlns:th="http://www.thymeleaf.org">
<head>
    <th:block th:include="/web/system/admin/include :: top"></th:block>
</head>
<body class="gray-bg">
<script type="text/javascript" th:src="@{/static/js/jquery-1.9.1.min.js}"></script>

<script>
    watermark();
    function watermark(settings) {
        //默认设置
        var defaultSettings = {
            watermarl_element: "body",
            watermark_txt: "青锋系统",
            watermark_img: '',
            watermark_x: 20, //水印起始位置x轴坐标
            watermark_y: 20, //水印起始位置Y轴坐标
            watermark_rows: 9, //水印行数
            watermark_cols: 10, //水印列数
            watermark_x_space: 70, //水印x轴间隔
            watermark_y_space: 30, //水印y轴间隔
            watermark_color: '#000', //水印字体颜色
            watermark_alpha: 0.4, //水印透明度
            watermark_fontsize: '15px', //水印字体大小
            watermark_font: '微软雅黑', //水印字体
            watermark_width: 210, //水印宽度
            watermark_height: 80, //水印长度
            watermark_angle: 15 //水印倾斜度数
        };
        //采用配置项替换默认值，作用类似jquery.extend
        if (arguments.length === 1 && typeof arguments[0] === "object") {
            var src = arguments[0] || {};
            for (key in src) {
                if (src[key] && defaultSettings[key] && src[key] === defaultSettings[key])
                    continue;
                else if (src[key])
                    defaultSettings[key] = src[key];
            }
        }

        var oTemp = document.createDocumentFragment();


        var maskElement = document.getElementById(defaultSettings.watermarl_element) || document.body;

        //获取页面最大宽度
        var page_width = Math.max(maskElement.scrollWidth, maskElement.clientWidth);

        //获取页面最大高度
        var page_height = Math.max(maskElement.scrollHeight, maskElement.clientHeight);

        //水印数量自适应元素区域尺寸
        defaultSettings.watermark_cols = Math.ceil(page_width / (defaultSettings.watermark_x_space + defaultSettings.watermark_width));
        defaultSettings.watermark_rows = Math.ceil(page_height / (defaultSettings.watermark_y_space + defaultSettings.watermark_height));
        var x;
        var y;
        for (var i = 0; i < defaultSettings.watermark_rows; i++) {
            y = defaultSettings.watermark_y + (defaultSettings.watermark_y_space + defaultSettings.watermark_height) * i;
            for (var j = 0; j < defaultSettings.watermark_cols; j++) {
                x = defaultSettings.watermark_x + (defaultSettings.watermark_width + defaultSettings.watermark_x_space) * j;
                var mask_div = document.createElement('div');
                var mask_img = document.createElement('img');
                mask_div.id = 'mask_div' + i + j;
                mask_div.className = 'mask_div';
                mask_img.className = 'mask_img';
                //mask_div.appendChild(document.createTextNode(defaultSettings.watermark_txt));
                mask_div.innerHTML = (defaultSettings.watermark_txt);
                mask_img.src = defaultSettings.watermark_img;
                mask_img.style.width = "150px";
                mask_img.style.height = "50px";

                // 空白图片会有占位,判断src为空时移除img标签  不为空时添加img
                if (defaultSettings.watermark_img == "") {
                    mask_div.remove(mask_img);
                } else {
                    mask_div.append(mask_img);
                }
                //设置水印div倾斜显示
                mask_div.style.webkitTransform = "rotate(-" + defaultSettings.watermark_angle + "deg)";
                mask_div.style.MozTransform = "rotate(-" + defaultSettings.watermark_angle + "deg)";
                mask_div.style.msTransform = "rotate(-" + defaultSettings.watermark_angle + "deg)";
                mask_div.style.OTransform = "rotate(-" + defaultSettings.watermark_angle + "deg)";
                mask_div.style.transform = "rotate(-" + defaultSettings.watermark_angle + "deg)";
                mask_div.style.visibility = "";
                mask_div.style.position = "absolute";
                mask_div.style.left = x + 'px';
                mask_div.style.top = y + 'px';
                mask_div.style.overflow = "hidden";
                mask_div.style.zIndex = "9999";
                mask_div.style.pointerEvents = 'none'; //pointer-events:none  让水印不遮挡页面的点击事件
                //mask_div.style.border="solid #eee 1px";　　　　　　　　　　//兼容IE9以下的透明度设置                mask_div.style.filter="alpha(opacity=50)";
                mask_div.style.opacity = defaultSettings.watermark_alpha;
                mask_div.style.fontSize = defaultSettings.watermark_fontsize;
                mask_div.style.fontFamily = defaultSettings.watermark_font;
                mask_div.style.color = defaultSettings.watermark_color;
                mask_div.style.textAlign = "center";
                mask_div.style.width = defaultSettings.watermark_width + 'px';
                mask_div.style.height = defaultSettings.watermark_height + 'px';
                mask_div.style.display = "block";
                oTemp.appendChild(mask_div);
            };
        };
        maskElement.appendChild(oTemp);

        var remove = function(settings) {
            maskElement.removeChild(oTemp);
        }
    }
</script>
</body>
</html>
